« previous next »

Author Question: The ________ background radiation in fact far exceeds all the energy radiated by all the stars and ... (Read 22 times)

erika

  • Hero Member
  • *****
  • Posts: 522
on: Jul 27, 2018
The ________ background radiation in fact far exceeds all the energy radiated by all the stars and galaxies that formed since then.
 
  Fill in the blank(s) with correct word

Question 2

The Balmer Beta absorption line is a result of a transition of an electron in a hydrogen atom from:
 
  A) level 2 to level 3.
  B) level 2 to level 4.
  C) level 3 to level 2.
  D) level 4 to level 2.
  E) None of the above.


nguyenhoanhat

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 27, 2018
Answer to Question 1

microwave

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

Thyroid conditions may make getting pregnant impossible.

An example of the founder effect with subsequent adaptive radiation. An example of the founder effect with subsequent adaptive radiation.
An example of a Hertzsprung–Russell diagram for a set of stars that includes the Sun An example of a Hertzsprung–Russell diagram for a set of stars that includes the Sun
U.S. Energy Consumption U.S. Energy Consumption
Generating Energy from Glucose When your body needs to break down glucose Generating Energy from Glucose When your body needs to break down glucose
Energy Transfer Energy Transfer
Expressing amounts of energy in different energy units is necessary to solve many chemistry ... Expressing amounts of energy in different energy units is necessary to solve many chemistry ...
Video: Kinetic parameters & Kinetic experiment

For a complete list of videos, visit our video library